A senior Russian senator says Russia and Iran are in talks over an arms deal worth around $10 billion.

Viktor Ozerov, head of the defense and security committee in Russia's upper house of parliament, the Federation Council, said on November 14 that the potential deal would see Moscow deliver tanks, artillery systems, planes, and helicopters to Tehran.

Ozerov was speaking in the Iranian capital during a parliamentary visit.

In October, Russia announced it had completed the delivery of S-300 air-defense missile systems to Iran, despite concerns from the United States and Israel.

The delegation from Russia's Federation Council was expected to discuss in Iran expanding economic ties, regional cooperation, and ways to help implement bilateral agreements signed by Russian President Vladimir Putin and Iranian President Hassan Rohani in August.